.page-faq {
  --faq-line: var(--paper-300);
  --faq-dark-line: rgba(156, 247, 231, 0.28);
  background: var(--paper-100);
  color: var(--ink-800);
  font-family: var(--font-body);
}

.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 2px;
}

/* ===== 首屏 ===== */
.page-faq .faq-hero {
  background:
    radial-gradient(circle at 88% -10%, var(--ink-900) 0%, rgba(10, 39, 64, 0) 62%),
    var(--ink-950);
  color: var(--paper-050);
  padding: clamp(1.25rem, 4vw, 2.25rem) 0 clamp(2.25rem, 6vw, 4rem);
  border-bottom: 1px solid var(--cyan-400);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(1.1rem, 3vw, 2rem);
}

.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-faq .breadcrumb__item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--slate-500);
}

.page-faq .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: rgba(94, 124, 147, 0.8);
}

.page-faq .breadcrumb__link {
  color: var(--cyan-200);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast), color var(--t-fast);
}

.page-faq .breadcrumb__link:hover,
.page-faq .breadcrumb__link:focus-visible {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

.page-faq .breadcrumb__item [aria-current="page"] {
  color: var(--paper-050);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
}

.page-faq .faq-hero__copy .eyebrow {
  display: inline-block;
  margin: 0;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--faq-dark-line);
  border-radius: 4px;
  color: var(--cyan-400);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0.85rem 0 1rem;
  color: var(--paper-050);
}

.page-faq .faq-hero__text {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(15px, 2.1vw, 17px);
  line-height: 1.8;
  color: rgba(255, 253, 248, 0.86);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.8rem;
  margin-top: 1.4rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--faq-dark-line);
}

.page-faq .faq-hero__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--coral-500);
  flex: none;
}

.page-faq .faq-hero__hours {
  font-size: 13px;
  color: rgba(255, 253, 248, 0.78);
}

.page-faq .faq-hero__mail {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan-400);
  word-break: break-all;
}

/* 分类控制台 */
.page-faq .faq-console {
  background: var(--ink-900);
  border: 1px solid var(--faq-dark-line);
  border-radius: var(--radius);
  padding: 1.1rem 1.1rem 1.2rem;
  box-shadow: var(--shadow-cyan);
}

.page-faq .faq-console__label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan-200);
}

.page-faq .faq-console__total {
  color: var(--paper-050);
  letter-spacing: 0.04em;
}

.page-faq .faq-chips {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.55rem 0.85rem;
  border: 1px solid var(--faq-dark-line);
  border-radius: 8px;
  color: var(--paper-050);
  font-size: 14px;
  text-decoration: none;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-chip__n {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan-400);
  transition: color var(--t-fast);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  background: var(--cyan-400);
  border-color: var(--cyan-400);
  color: var(--ink-950);
}

.page-faq .faq-chip:hover .faq-chip__n,
.page-faq .faq-chip:focus-visible .faq-chip__n {
  color: var(--ink-950);
}

.page-faq .faq-console__hint {
  margin: 1rem 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 253, 248, 0.7);
}

.page-faq .faq-console__foot {
  margin: 0.9rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px solid var(--faq-dark-line);
  font-size: 13px;
  color: rgba(255, 253, 248, 0.74);
}

.page-faq .faq-console__foot a {
  color: var(--coral-500);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast);
}

.page-faq .faq-console__foot a:hover,
.page-faq .faq-console__foot a:focus-visible {
  border-bottom-color: var(--coral-500);
}

/* ===== 通用区块 ===== */
.page-faq .faq-band {
  padding: clamp(2.25rem, 5vw, 4rem) 0;
}

.page-faq .faq-band--light {
  background: var(--paper-100);
}

.page-faq .faq-band--paper {
  background: var(--paper-050);
  border-top: 1px solid var(--paper-300);
  border-bottom: 1px solid var(--paper-300);
}

.page-faq .faq-band--dark {
  background: var(--ink-950);
  color: var(--paper-050);
}

.page-faq .faq-band__head {
  max-width: 62ch;
}

.page-faq .faq-band__head .eyebrow {
  display: block;
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate-500);
}

.page-faq .faq-h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.4vw, 38px);
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--ink-950);
}

.page-faq .faq-h2--light {
  color: var(--paper-050);
}

.page-faq .faq-band__intro {
  margin: 0.85rem 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-faq .faq-band--dark .eyebrow {
  color: var(--cyan-400);
}

/* ===== 分类总览 ===== */
.page-faq .faq-overview {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  margin-top: clamp(1.5rem, 3.5vw, 2.5rem);
}

.page-faq .faq-overview__cards {
  display: grid;
  gap: 0.9rem;
}

.page-faq .faq-cat {
  --cat: var(--cyan-400);
  position: relative;
  background: var(--paper-050);
  border: 2px solid var(--ink-800);
  border-left: 8px solid var(--cat);
  border-radius: var(--radius);
  padding: 1rem 1rem 1.1rem;
  box-shadow: 6px 6px 0 rgba(20, 24, 29, 0.16);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}

.page-faq .faq-cat:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 rgba(20, 24, 29, 0.24);
}

.page-faq .faq-cat--a { --cat: var(--cyan-400); }
.page-faq .faq-cat--b { --cat: var(--coral-500); }
.page-faq .faq-cat--c { --cat: var(--cyan-200); }
.page-faq .faq-cat--d { --cat: var(--slate-500); }
.page-faq .faq-cat--e { --cat: var(--ink-700); }

.page-faq .faq-cat__title {
  margin: 0 0 0.45rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.01em;
  color: var(--ink-950);
}

.page-faq .faq-cat__desc {
  margin: 0 0 0.7rem;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-700);
}

.page-faq .faq-cat__meta {
  margin: 0 0 0.55rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate-500);
}

.page-faq .faq-cat__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--ink-950);
  text-decoration: none;
  border-bottom: 2px solid var(--cat);
  padding-bottom: 1px;
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-cat__link:hover,
.page-faq .faq-cat__link:focus-visible {
  color: var(--ink-700);
  border-bottom-color: var(--ink-950);
}

.page-faq .faq-overview__aside {
  display: grid;
  gap: 0.6rem;
  align-content: start;
}

.page-faq .faq-overview__aside img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .media-caption {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--slate-500);
}

.page-faq .faq-band--dark .media-caption {
  color: rgba(255, 253, 248, 0.62);
}

/* ===== 热门问题 ===== */
.page-faq .faq-hot {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-faq .faq-hot__item {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  column-gap: 0.75rem;
  row-gap: 0.35rem;
  padding-bottom: 1rem;
  border-bottom: 1px dashed var(--paper-300);
}

.page-faq .faq-hot__n {
  grid-column: 1;
  grid-row: 1 / span 3;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--coral-500);
}

.page-faq .faq-hot__q {
  grid-column: 2;
  margin: 0;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink-950);
}

.page-faq .faq-hot__a {
  grid-column: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-700);
}

.page-faq .faq-hot__link {
  grid-column: 2;
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-950);
  text-decoration: none;
  border-bottom: 2px solid var(--cyan-400);
}

.page-faq .faq-hot__link:hover,
.page-faq .faq-hot__link:focus-visible {
  border-bottom-color: var(--coral-500);
}

/* ===== 三步排查 ===== */
.page-faq .faq-steps {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.75rem);
}

.page-faq .faq-steps__list {
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  padding-left: 3.2rem;
}

.page-faq .faq-step + .faq-step {
  margin-top: 1.4rem;
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 1.32rem;
  top: 0.5rem;
  bottom: -1.4rem;
  width: 2px;
  background: linear-gradient(180deg, rgba(45, 245, 212, 0.55), rgba(45, 245, 212, 0.08));
}

.page-faq .faq-step:last-child::before {
  content: none;
}

.page-faq .faq-step__num {
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.65rem;
  height: 1.85rem;
  border-radius: 6px;
  background: var(--cyan-400);
  color: var(--ink-950);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-faq .faq-step__title {
  margin: 0 0 0.4rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 19px;
  color: var(--paper-050);
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(255, 253, 248, 0.78);
}

.page-faq .faq-steps__cta {
  margin: 1.8rem 0 0;
}

.page-faq .faq-steps__cta a {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--coral-500);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast);
}

.page-faq .faq-steps__cta a:hover,
.page-faq .faq-steps__cta a:focus-visible {
  border-bottom-color: var(--coral-500);
}

.page-faq .faq-steps__media {
  display: grid;
  gap: 0.6rem;
  align-content: start;
}

.page-faq .faq-steps__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== 分类问答 ===== */
.page-faq .faq-band--qa {
  padding-bottom: clamp(2.75rem, 6vw, 4.5rem);
}

.page-faq .faq-topic {
  margin-top: clamp(1.9rem, 4vw, 2.9rem);
  scroll-margin-top: 6rem;
}

.page-faq .faq-topic__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.55rem 0.85rem;
  padding-bottom: 0.7rem;
  border-bottom: 2px solid var(--ink-800);
}

.page-faq .faq-topic__num {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  color: var(--paper-050);
  background: var(--ink-800);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

.page-faq .faq-topic__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 30px);
  letter-spacing: -0.01em;
  color: var(--ink-950);
}

.page-faq .faq-topic__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate-500);
}

.page-faq .faq-qa {
  display: grid;
  gap: 0.6rem;
  margin-top: 0.95rem;
}

.page-faq .faq-qa__item {
  background: var(--paper-050);
  border: 2px solid var(--paper-300);
  border-radius: var(--radius);
  transition: border-color var(--t-fast), box-shadow var(--t-base);
}

.page-faq .faq-qa__item[open] {
  border-color: var(--cyan-400);
  box-shadow: 6px 6px 0 rgba(4, 18, 31, 0.12);
}

.page-faq .faq-qa__q {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.85rem 1rem;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink-950);
}

.page-faq .faq-qa__q::-webkit-details-marker {
  display: none;
}

.page-faq .faq-qa__q::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink-700);
  transition: color var(--t-fast);
}

.page-faq .faq-qa__item[open] .faq-qa__q::after {
  content: "−";
  color: var(--coral-500);
}

.page-faq .faq-qa__a {
  padding: 0 1rem 1rem;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-faq .faq-qa__a p {
  margin: 0 0 0.6rem;
}

.page-faq .faq-qa__a p:last-child {
  margin-bottom: 0;
}

/* ===== 联系与工单 ===== */
.page-faq .faq-contact {
  background: var(--ink-950);
  color: var(--paper-050);
  padding: clamp(2.25rem, 5vw, 3.75rem) 0 clamp(1.75rem, 4vw, 2.75rem);
  border-top: 1px solid var(--cyan-400);
}

.page-faq .faq-contact__head {
  max-width: 54ch;
}

.page-faq .faq-contact__head .eyebrow {
  display: block;
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.4rem, 3.5vw, 2.25rem);
}

.page-faq .faq-contact__card {
  background: var(--ink-900);
  border: 1px solid var(--faq-dark-line);
  border-radius: var(--radius);
  padding: 1.05rem 1.05rem 1.15rem;
}

.page-faq .faq-contact__card--accent {
  border-color: var(--coral-500);
}

.page-faq .faq-contact__label {
  margin: 0 0 0.55rem;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan-200);
}

.page-faq .faq-contact__value {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: clamp(13px, 3vw, 15.5px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper-050);
  word-break: break-all;
}

.page-faq .faq-contact__value--tel {
  font-size: clamp(18px, 4.5vw, 22px);
  letter-spacing: 0.03em;
}

.page-faq .faq-contact__value--sm {
  font-family: var(--font-body);
  font-size: 15.5px;
  font-weight: 700;
  word-break: normal;
}

.page-faq .faq-contact__note {
  margin: 0 0 0.9rem;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 253, 248, 0.7);
}

.page-faq .faq-contact__card .btn {
  margin-top: auto;
}

.page-faq .faq-contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.6rem;
  margin-top: clamp(1.4rem, 3.5vw, 2rem);
  padding-top: 1.1rem;
  border-top: 1px dashed var(--faq-dark-line);
}

.page-faq .faq-contact__links a {
  font-size: 13.5px;
  color: var(--cyan-200);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-contact__links a:hover,
.page-faq .faq-contact__links a:focus-visible {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

.page-faq .faq-contact__icp {
  margin: 1rem 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255, 253, 248, 0.5);
}

/* ===== 断点 ===== */
@media (min-width: 620px) {
  .page-faq .faq-overview__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-overview__cards .faq-cat:last-child {
    grid-column: 1 / -1;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-contact__card--accent {
    display: flex;
    flex-direction: column;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-hot {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem 1.9rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.3fr 0.9fr;
    align-items: start;
  }

  .page-faq .faq-console {
    margin-top: 0.5rem;
  }

  .page-faq .faq-overview {
    grid-template-columns: 1.35fr 0.85fr;
    align-items: start;
  }

  .page-faq .faq-steps {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: 1.15fr 0.85fr 0.85fr;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-hero {
    padding-bottom: clamp(3rem, 5vw, 4.5rem);
  }

  .page-faq .faq-qa__q {
    font-size: 16px;
    padding: 0.95rem 1.15rem;
  }

  .page-faq .faq-qa__a {
    padding: 0 1.15rem 1.15rem;
    font-size: 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat,
  .page-faq .faq-chip,
  .page-faq .faq-qa__item {
    transition: none;
  }

  .page-faq .faq-cat:hover {
    transform: none;
  }
}
<<<END>>>